Gainward GeForce GTX 670 Phantom Evaluation

After many months of discussing its latest architecture, Nvidia has regained the single-GPU performance crown with its GeForce GTX 680, which outperformed the Radeon HD 7970 by about 7% in our tests. The arrival of Kepler forced AMD to cut prices on its South Islands lineup, including dropping the HD 7970 by $ 70, which is $ 479, or about 4% less than the GTX 680's MSRP of $ 499. Dollar means.

The HD 7950 was also trimmed by $ 60 to $ 399, making it one of the most alluring cards in the 7000 series because it isn't – or was not, we should say the same. Nvidia continues Kepler's rollout and has introduced the GTX 670, which is priced at 399 US dollars compared to the HD 7950. While the GTX 670 is $ 100 cheaper than the GTX 680, it doesn't seem much slower on paper, and that could spell disaster for AMD.

The GTX 670 shares the DNA of the GTX 680 as it is powered by the same GK104 GPU and shares many other similarities. For example, it uses 2 GB of GDDR5 6 GHz memory and uses the new SMX units and GPU Boost technology. While targeting the pricing of the HD 7950, Nvidia says that its crosshairs are actually on the HD 7970 for performance. Another scary notion for AMD.

All of these attitudes mean very little if gamers can't buy GTX 600 series products. It has been almost two months since the GTX 680 launched, but at this point you cannot buy one online. Poor availability means not only that a GTX 680 is difficult to find, but also that many people have paid over $ 499 MSRP, which detracts from the card's full value potential.

We hope Nvidia solves this soon, especially if the GTX 670 is all it promises …

Gainwards GTX 670 in detail

After recently reviewing Gainward's GeForce GTX 680 Phantom, we're excited about the company's premium version of the company's GTX 670. The Phantom Edition card features a redesigned circuit board with an improved performance phase, factory overclocking and a massive triple slot cooler. Gainward introduced its second generation phantom cooler with the GTX 680, and the GTX 670 receives the same treatment.

The GTX 670's Phantom heatsink is 185 mm long, 70 mm wide and 17 mm high (7.28 "x 2.75" x 0.66 "), which is considerably smaller than the 225 mm x 70 mm x 40 mm The GTX 680's heat sink. It has a black fan shroud that forces the 80mm fans to suck in air through the grill above them and push it over the fins below.

While the smaller heatsink surprised us, we are more shocked at how compact the GTX 670 Phantom's board is. Without a cooler, it's only 17.3 cm long, making it the shortest high-performance graphics card we've ever seen. To put this in perspective: The Radeon HD 6450 also measures 17 cm and is an ultra-low-end HTPC card. With the heat sink and fairing installed, the GTX 670 Phantom is 24.3 cm long and thus still slightly shorter than the 25.5 cm long body of the GTX 680.

You'll notice some layout changes between the GTX 670 and 680. Nvidia moved the power supply to the west side of the GPU (much closer than traditional boards) and then flipped the chip to improve power integrity and increase efficiency. After the circuits of the GTX 670 were moved to the other side of the board, the right side of the board was empty and was therefore removed to save space.

While the GTX 680 Phantom had a large heat spreader that covered the entire circuit board to cool the GDDR5 memory and 6-phase power, the GTX 670 Phantom abandoned that design. Instead, the GDDR5 memory is bare, while the power phase is cooled by a separate aluminum heat sink.

Gainward did a bit of factory overclocking too, but before we dive into clock speeds, let's take a closer look at the GTX 670's GPU. The card comes with 1344 CUDA cores and 7 SMX units, 1 SMX unit and 192 CUDA cores, which are less than the GTX 680. There are also slightly fewer TAUs, 112 out of 128, while the ROPs remain at 32.

The memory subsystem is identical to the GTX 680 and consists of four 64-bit controllers (256-bit) with 2 GB of GDDR5 memory that is clocked at 6008 MHz (DDR). The memory bandwidth remains at 192.2 GB / s.

Nvidia's specification for the base clock speed is 915 MHz, while the average boost clock speed is 980 MHz. Gainward has increased the base clock frequency to 1006 MHz, while the memory operates at 6108 MHz and increased the bandwidth to 195.5 GB / s.

The rest of the Gainward card remains standard, including a pair of SLI connectors, 6-pin and 8-pin PCIe power connectors, and an I / O panel configuration made up of HDMI, DisplayPort, and two DVI connectors .

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